Give me a boar brush, proraso cream, a wet face and thirty seconds and I'm set. Proraso is so tolerant of whatever amount of water you throw at it, so I use it when in a rush and don't want to fuss with proper water/cream ratios.. I exclusively face lather, so I don't know if I'm just more used to it or what, but I can get things going super fast.
Other times if I'm late, I just don't shave.